TY  - BOOK
AU  - Ehrlich, Paul R.
AU  - Ehrlich, Anne H. ; Holdren, John P.
TI  - Ecoscience: population, resources, environment
SN  - 0716700298
U1  - 304.2 21st ed.
PY  - 1977///
CY  - San Francisco
PB  - W.H. Freeman and Company
KW  - Ecology
KW  - Environmental geology
KW  - Human ecology
KW  - Natural resources
KW  - Pollution
KW  - Population
N1  - Index: pp 1005-51
ER  -